电感耦合等离子体质谱法直接测定加碘盐中的碘  

Determination of iodine in adding iodine salt by inductively coupled plasma mass spectrometry

作　　者：彭荣飞[1] 于桂兰[1] 侯建荣[1] 黄聪[1] 

机构地区：[1]广州市疾病预防控制中心,广州510080

出　　处：《中国卫生检验杂志》2009年第5期990-992,共3页Chinese Journal of Health Laboratory Technology

基　　金：广东省医学科研课题(A2008571);广州市医学科研课题(2007-YB-122;2007-YB-123)

摘　　要：目的：为调查加碘盐中的碘含量水平,建立了电感耦合等离子体质谱法测定加碘食盐中碘的分析方法。方法：样品经1%NH3.H2O溶解后直接用电感耦合等离子体质谱进行分析,测定过程中用耐高盐接口（X i接口）、基体匹配和内标法消除非质谱干扰。结果：方法的检出限小于0.05 mg/kg,精密度优于1.5%,回收率为97.6%-102%,实际样品的分析结果和国标法没有显著差别,对3个标准参考物质的分析结果和证书值一致。结论：该方法简单、快速和准确。Objective：To investigate the level of iodine in adding iodine salt, a method was developed to determine iodine in adding iodine salt by inductively coupled plasma mass spectrometry. Methods：After dissolved by 1% NH3 · H2O, the samples were directly determined by inductively coupled plasma mass spectrometry which uses Xi interface, matrix matching and internal standardization to eliminate non - spectroscopic interference. Results：The detection limit was less than 0.05 mg/kg, the RSD better than 1.5% ,recoveries 97.6% - 102%. The results of analyzing practical samples were the same as using national standard method and the results of analyzing standard reference materiel were satisfactory. Coneluson： This method is simple, sensitive and accurate.

关 键 词：电感耦合等离子体质谱法 食盐 碘 

分 类 号：O657.63[理学—分析化学]